Patents by Inventor David J. Soderberg

David J. Soderberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Catalyst inventory determination
    Patent number: 4750989
    Abstract: An effective, efficient and safe method is provided to accurately determine the amount of catalyst in an ebullated bed reactor without depressurizing the reactor or exposing the hydrocarbon in the reactors to oxidizing, flammable, or explosive conditions. Measurements are made automatically by density detectors and pressure sensors along with other equipment.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: June 14, 1988
    Assignee: Amoco Corporation
    Inventor: David J. Soderberg
  • Increasing resid hydrotreating conversion
    Patent number: 4743356
    Abstract: Resid hydrotreating conversion of resid can be substantially increased by decreasing the feed gas rate and simultaneously increasing the concentration of hydrogen in the feed gases. Hydrogen purity can be increased by increasing the flow rate of lean sponge oil into the sponge oil absorbers, bleeding some of the recycled reactor tail gases, and increasing the makeup gas rate.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: May 10, 1988
    Assignee: Amoco Corporation
    Inventors: David J. Soderberg, Norman K. McDaniel, Norman R. Woods
  • Pour-point depression of crude oils by addition of tar sand bitumen
    Patent number: 4728412
    Abstract: The present invention provides a process for reducing the pour point of a crude oil by adding a pour-point depressant selected from the group consisting of raw bitumen and hydrotreated bitumen to form a blend possessing a relatively lower pour point.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: March 1, 1988
    Assignee: Amoco Corporation
    Inventor: David J. Soderberg